Safety-dog trip for cotton-presses.



.T C. WRIGHT.

SAFETY DOG TEIP EOE uoTToN PRESSES.

APPLIUATION FILED IEB.20,1909. x 937,135, Patented Oct. 19, 1909.

.iw/Einw im num-mgm ."[Wlmhm u WITNE Es: M "1"." INVENTOR M// T.. Q'

rr Trias iaTNT rien.

JOHN c.wR1ei-1T, orvsRYMoUraTRxAs.

esmas,

Speccation of Letters Patent. y

Patented Oct. 19, 1909.

Application filed February 20, 1909. Serial No. 479,185.

To all whom it may concern.'

Be it knownthat I, JOHN C. WRIGHT, a citizen of the United States,residing at `Seymour, in the county of Baylor and State of Texas, haveinvented certain new and useful improvements in Safety-Dog Trips forCotton-Presses, of which the following is a specification. l

VMy invention relates to new and useful improvements in safety dog tripsfor cotton presses.

Press boxes commonly in use are made double and mounted to revolve, onebox standing under the tamper and the other over the press head. Dogsare arranged in the sides of the boxes to hold thelcotton during thetamping. These dogs must be withdrawn when the box is swung around overthe press head, and it has been the practice to withdraw them by hand.lf the operator should forget to unhook the dog rods and run the presshead up for tying the bale, he either breaksthe hangers or the rods,making the press useless.

It is, therefore, the object of my invention to provide means forautomatically withdrawing the dogs as the box is swung around, andpreventing not only the above accident but saving time on the part ofthe operator. y

Finally, the object of my invention is to provide a device of thecharacter described that will be strong, durable, simple, efficient andcomparatively inexpensive to construct, also one in which the severalparts will not be liable to get out of working order.

`With the above and other objects in view, my invention has particularrelation to certain novel features of construction and operation, anexample of which is described in the following specification andillustrated in the accompanying drawings, wherein:

Figure 1 is a plan view, with the boxes in section, and Fig. 2 is apartial end elevation of the box, showing the'trip.

In the drawings the numeral 1 designates the platform or turn-table onwhich the press boxes 2 are mounted and arranged in the usual manner. Onthe sides of the boxes crank shafts 3 are mounted in bearing brackets 4.The shafts are commonly called dog rods, as dogs 5 projecting laterallythrough slots 6 in the side walls andinto the boxes are pivoted thereon.At its outer end each shaft is formed with an upward and outwardlydirected arm 7. By swinging the 'carried upward by the tamper.

arms outward, the crank shafts are rocked and the dogs withdrawn, thuspermitting the press head to run up and press the cotton.

By returning or swinging the arm inward, the dogs are projected intoVthe box. lt is understood that one box is over the press head and theother under the tamper. Vhile the box is under the tamper the dogs areprojected inward, as shown at the left hand side of Fig. 1. The dogshold the cotton in the box and prevent it from being Vhen the box isover the press head the dogs are withdrawn, as shown at the right handside of Fig. 1, for the reasons stated.

For automatically operating the crank shafts, I mount a bracket 8 on thecross piece 9 of each end door 10, and at the center thereof. A lever 11is pivoted centrally at the outer end of the bracket. Links 12 havingtheir inner ends pivoted to the opposite ends of the lever are pivotedat their outer ends to the outer ends .of bent levers 13 centrallypivoted on the ends of crossbars 14 extending from the bracket 8. Attheir inner ends the levers 13 are bifurcated as indicated at 15 in Fig.1, to receive the Aupper ends of the arms 7. It is obvious that byswinging t-he lever 11, the links are thrown inward or outward, the bentlevers 13 swing and the arms 7 swing and crank shafts 3 are rocked, thusoperating the dog.

For swinging the lever 11, a spring held trip 16 is pivoted on the outerend directly on the link, so as to project between the press uprights17. By observing Fig. 1 it will be seen that the lever 11 of one box isswung to withdraw the dogs; while the other is in its normal position toallow the dogs to project into the box.

A rod 18 is secured at one end to the outer end of spring held trips 16and its other end passes into a hole in the side of the press box 2 tohold the device in place while tamping the cotton and when the press boxis swung over the press head and spring held trip 16 strikes pressuprights 17 and the trip 16 is sprung withdrawing dogs 5 from press box2 the rod 18 is also withdrawn.

What I claim, is:

1. In a` safety dog trip for cotton compresses, the combination with asupport, of levers mounted on the support adapted to engage with the dogrods, means for operating the levers simultaneously, and means forsecuring the support to the boX of a eot ton compress.

2. In a safety dog trip for cotton Compresses the combination With asupport, oit levers mounted on the support adapted to engage With thedog rods, means for operating the levers simultaneously, means Jforoperating the operating means, for securing the support to the box of acotton compress.

3. In a safety dog trip the combination with a support, of a levermounted on the support, other levers engaging With dog rods carried bythe press box, means for operating the levers simultaneously, and meansfor operating the operating means.

and means y 4. In a safety dog trip the combination with a support, of alever mounted on the support, a plurality of bitureated levers mountedon the support adapted to engage JOHN C. WRIGHT.

Witnesses IV. H. FRANCIS, F. L. FAUCHER.

